Physics, 25.09.2019 12:10 gabi83

Unlike velocity, speed is scalar, which means it is described by__only.
a. direction
b. magnitude
c. time
d. motion

Answers: 2

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Answer from: indiaholmes16

Answer;

- Magnitude only

Unlike velocity, speed is scalar, which means it is described by magnitude only.

Explanation; A scalar quantity is a quantity that has magnitude only, examples are speed, distance, mass, time, temperature etc.A vector quantity on the other hand is a quantity that has both magnitude and direction. These includes, velocity, displacement, etcSpeed is a scalar quantity while velocity is a vector quantity since it has a magnitude called speed, and a direction, such as north, southwest, etc.

Answer from: kiylabeasty7302

The correct answer is magnitude.

Explanation: A scalar quantity is a quantity that has magnitude only. For example distance, speed etc.

A vector quantity is a quantity that has magnitude as well as direction. For example displacement, velocity etc.

Velocity is a vector quantity and speed is a scalar quantity.

Suppose, a car is moving with 3 meter per second. It represents the speed at which the car is moving.

But car is moving with 3 meter per second in south direction. It represents the velocity because 3 meter per second is magnitude and south is a direction.

Therefore, Unlike velocity, speed is scalar, which means it is described by magnitude only.

Answer from: Quest

the largest known star in the universe is uy scuti, a hypergiant with a radius around 1,700 times larger than the sun.jul 26, 2018

explanation:

Answer from: Quest

1) when you rub your hands together quickly, the kinetic energy is converted to mechanical energy.2) thermal energy from the sun travels to earth as infrared waves.3) energy is transferred through the matter of space by electromagnetic waves. 4) when a match is burned, chemical potential energy is converted to thermal and radiant energy. 5) seismicwaves are caused by back and forth movement , or vibration, of an object. 6) mechanicalenergy in an engine changes thermal energy into kinetic energy to make a car move.

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Unlike velocity, speed is scalar, which means it is described by__only.
a. direction
b....

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